all my speakers in my sierra are working .only the drivers door is working.
CHECK YOUR FADER/BALANCER ON THE HEAD UNIT, IF NOTHING CHANGES PULL THE DOOR PANELS OFF AND CHECK THE TWO WIRES THAT PLUG INTO THE SPEAKER WITH AN OHM METER, IF IT READS A SIGNAL THEN YOUR SPEAKERS R BLOWN IF NOT, YOU NEED TO REMOVE THE DECK AND INSPECT ALL THE WIRES LEADING FROM THE HEAD UNIT TO THE SPECKERS FOR ANY FRAYING OR SPILTING THAT WOULD CAUSE A SO CALLED "ARKING" AND NOT ALLOW SIGNAL TO BE RECIEVED BY THE SPECKERS.
thank you will do
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